CN204493591U - Rotator mixer gear reduction unit used - Google Patents

Abstract

The utility model discloses a gear reducer used in a rotor sand mixer, which is installed under the chassis of the sand mixer, and includes a box body integrally cast with the chassis of the sand mixer, and the scraper shaft of the sand mixer vertically extends into the box body Also serves as the output shaft of the reducer, the end of the scraper shaft extending into the box is fixed with a large helical gear, the input shaft of the input power extends horizontally into the box from one side of the box, and the box is provided with a supporting shaft. A small bevel gear is fixed at the end of the input shaft located in the box, and coaxially arranged on the support shaft are: a large bevel gear meshing with the small bevel gear for transmission, and a small helical gear meshing with the large helical gear for transmission. The utility model integrally casts the box body of the reducer and the chassis of the sand mixer, simplifies the manufacturing process, and makes the overall structure of the reducer more compact. Using the scraper shaft of the sand mixer to install the large helical gear in the reduction box reduces the intermediate transmission links, improves the transmission efficiency, and also reduces the assembly workload, making the transmission process of the reduction box simple and efficient.

Description

Gear reducer for rotor sand mixer

technical field

The utility model relates to the technical field of reducers, in particular to a gear reducer used in a rotor sand mixer.

Background technique

As the core equipment of foundry sand treatment, the rotor sand mixer is widely used in the foundry sand treatment production line because of its high sand mixing efficiency and sand mixing quality. The gearbox is an important mechanical part of the transmission device of the sand mixer, and the selection and design of its structure and parts are particularly important. The current sand mixer generally uses a standard gearbox as its transmission hub, and a matching base needs to be made during installation. This structure results in relatively limited maintenance space for the gearbox. The output shaft end of the reduction box needs to be connected with the input shaft of the sand mixer chassis by a coupling, which increases the manufacturing precision of the connection, makes assembly difficult, takes up a large space, and has low transmission efficiency.

Utility model content

The problem to be solved by the technology of the utility model is: to overcome the deficiencies in the prior art, and provide a gear reducer used in a rotor sand mixer.

The technical solution adopted by the utility model to solve the technical problem is: a gear reducer used in the rotor sand mixer, installed under the chassis of the sand mixer, including a box body cast integrally with the chassis of the sand mixer, and the sand mixer The scraper shaft vertically extends into the box and doubles as the output shaft of the reducer, and the end of the scraper shaft extending into the box is fixed with a large helical gear, and the input shaft of the input power extends horizontally into the box from one side of the box , there is a support shaft in the box, and a small bevel gear is fixed at the end of the input shaft in the box. The support shaft is coaxially provided with: a large bevel gear meshing with the small bevel gear for transmission, and a small bevel gear meshing with the large helical gear for transmission. helical gear.

In order to improve the wear resistance of the chassis of the sand mixer, that is, the bottom of the reducer box, the chassis is covered with a wear-resistant bottom plate.

The beneficial effects of the utility model are: the utility model integrally casts the reducer box body and the sand mixer chassis, which simplifies the manufacturing process, the material performance is easy to control, and the overall structure of the reducer becomes more compact. The large helical gear in the reduction box is directly installed by the scraper shaft of the sand mixer, thereby reducing the intermediate transmission links, improving the transmission efficiency, and reducing the assembly workload, making the transmission process of the reduction box simple and efficient.

Description of drawings

Below in conjunction with accompanying drawing and embodiment the utility model is further described.

Fig. 1 is the structural representation of the utility model.

In the figure 1. Chassis 2. Box 3. Scraper shaft 4. Large helical gear 5. Input shaft 6. Support shaft 7. Small bevel gear 8. Large bevel gear 9. Small helical gear 10. Wear-resistant bottom plate

Detailed ways

The utility model is described further in conjunction with accompanying drawing now. These drawings are simplified schematic diagrams only to illustrate the basic structure of the utility model in a schematic way, so they only show the configurations related to the utility model.

As shown in Figure 1, a gear reducer used in a rotor sand mixer is installed under the chassis 1 of the sand mixer, including a box body 2 cast integrally with the chassis 1 of the sand mixer, and a scraper shaft 3 of the sand mixer Vertically protruding into the casing 2 and serving as the output shaft of the speed reducer, the chassis 1 is covered with a wear-resistant bottom plate 10 to improve the wear resistance of the chassis 1 of the sand mixer, that is, the bottom of the casing 2 of the speed reducer.

The end of the scraper shaft 3 extending into the box body 2 is fixed with a large helical gear 4, and the input shaft 5 for input power extends horizontally into the box body 2 from one side of the box body 2, and the box body 2 is provided with a supporting shaft 6. A small bevel gear 7 is fixed at the end of the input shaft 5 in the box body 2, and the support shaft 6 is coaxially provided with: a large bevel gear 8 meshing with the small bevel gear 7 for transmission, and a large helical gear 4 for meshing transmission. Small helical gear 9.

The input shaft 5, the support shaft 6 and the scraper shaft 3 are all supported on the box body 2 through corresponding bearings.

The input shaft 5 of the reduction box is connected to the transmission pulley to input power, and the transmission direction and speed are changed through the transmission of the reduction box to complete the mixing operation of the casting sand in the sand mixer. Since the box body 2 and the chassis 1 of the sand mixer are integral castings, the manufacturing process becomes simple, and the material properties are easy to control, and the overall structure of the reducer becomes more compact. The large helical gear 4 is installed on the scraper shaft 3 of the sand mixer, which reduces the intermediate transmission links, improves the transmission efficiency, reduces the assembly workload, and makes the transmission process of the gearbox simple and efficient.

The above-mentioned embodiments are only to illustrate the technical conception and characteristics of the present utility model. Equivalent changes or modifications made by the spirit of the present utility model shall be covered within the protection scope of the present utility model.

Claims (2)

1. A gear reducer used in a rotor sand mixer, which is installed under the chassis (1) of the sand mixer, is characterized in that: it includes a box (2) integrally cast with the chassis (1) of the sand mixer, and the sand mixer The scraper shaft (3) of the machine extends vertically into the box body (2) and doubles as the output shaft of the reducer, and the end of the scraper shaft (3) extending into the box body (2) is fixed with a large helical gear (4 ), the input shaft (5) of the input power extends horizontally into the box (2) from one side of the box (2), and the box (2) is provided with a support shaft (6), which is located in the box (2) The end of the input shaft (5) is fixed with a small bevel gear (7), and the support shaft (6) is coaxially provided with: a large bevel gear (8) meshing with the small bevel gear (7), and a large helical gear (4) ) meshes with the small helical gear (9) of the transmission. 2. The gear reducer used in the rotor sand mixer according to claim 1, characterized in that: the chassis (1) is covered with a wear-resistant bottom plate (10).